Highlights Even better energy efficiency More environmentally friendly Lifespan of 30,000 hours Cool white - 4000K Suitable for fixtures with conventional ballast Even better energy efficiency This Noxion Lucent LED PL-S EM 4-Pin bulb offers even better energy efficiency than conventional energy-saving bulbs. It uses just 4.5 watts of power to replace a bulb that uses 9 watts, for instance. That means energy savings of another 50%! More environmentally friendly As well as being more energy efficient, this Noxion LED energy-saving bulb is also better for the environment because it doesn't contain any harmful gasses. Lifespan of 30,000 hours Another benefit the Noxion Lucent LED PL-S EM 4-Pin bulb has over a conventional energy-saving bulb is its much longer lifespan. In fact, it lasts up to 3 times longer and has a lifespan of 30,000 hours which means around 8 hours years of use if it's on for 10 hours a day! LED bulbs may be a little more expensive to buy initially, but the longer lifespan and excellent energy efficiency means a quick return on your investment. Cool white - 4000K This bulb has a colour temperature of 4000K and emits a cool white light that helps to keep people focussed and alert. Other colour temperatures are also available. Suitable for fixtures with conventional ballast This Noxion Lucent LED PL-S EM bulb has a 4-pin (2G7) connector and is suitable for fixtures that have a conventional (electromagnetic) ballast. To save even more energy, it's also possible to remove the ballast and connect the bulb directly to the mains. If in doubt, consult a qualified electrician.